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No. 794,749. PATENTBD JULY 18, 1905. R. A. SIMONSON.

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APPLICATION FILED JAN. 27.19.05.

5220967755; morwom UNITED STATES Patented July 18, 1905.

PATENT OFFICE.

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S?EOIFICATION forming part of Letters Patent No. 794,749, dated July 18, 1905.

Application filed anuary 27, 1905. Serial 110. 242,922.

To 015/ whom it may concern.-

Be it known that I, ROGER A. SIMONSON, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Indexes, of which the following is a specification.

My invention relates to indexes, and is more particularly concerned with slip-strip holders designed to receive indexing-strips and be attached to the partitions of card-files.

It will be understood by those skilled in the art that in card-files of the larger sizes it is customary to em ploy what are known as partitions or guide-cards to separate one set or group of cards from another in the same receptacle. These guide-cards or partitions, as they will be hereinafter called, may consist of various materialsfor example, cardboard, strawboard, plasterboard, or even thin pieces of woodthe heavier material being used in files of the larger sizes.

The object of this invention is to provide a slip-strip holder which may be readily attached to and detached from the card-file partition an d may be self-retainingthat is to say, will of itself maintain its position upon the card or partition unless removed by hand.

It is also my object to provide means for preventing the holder from being forced too far down onto the partition and also to provide means for preventing the slip-strip from being inserted too far into the holder.

I attain these objects by the means illustrated in the accompanying drawings, in which Figure 1 is a face view of a holder in position upon acard-file partition and with a slipstrip in position in the holder. Figs. 2 and 3 are perspective face and rear views, respectively, of the holder. Fig. 4 is a perspective view of the holder in position upon a partition. A slip-strip is also shown in position and the parts are shown in section on the line 4 4, Fig. 1, in order to more clearly illustrate the relationship of the parts. Fig. 5 is a transverse sectional view of-a modified form of holder wherein the stop instead of beingin the form of an impressed rib consists of inwardly-projecting tongues.

Similar numerals refer to similar parts throughout the several views.

Referring to Figs. 1 and 4, inclusive, the holder 1 is constructed of a single piece of spring-steel folded over upon itself and so formed that its adjacent edges 22 tend to spring together with considerable force and engage the partition 3, to thereby firmly maintain the position of the holder upon the partition. In the usual and preferred construction the entire inner surface of the holder below the rib 4 therein will bear with greater or less force against the surfaces of the partition. The pressure with which the holder grips the partition may be varied to suit the size and material of the partitions employed andto suit the various conditions to which the file will be subjected in use. For any given size of holder and any given partition the gripping force of the holder may of course be varied also by varying the thickness and temper of the steel and the amount of superficial area of the partition which'it will contact. The essential feature is that the gripping force of the holder is small enough to permit the holder to be readily attached to the partition. and great enough to prevent it from being accidentally dislodged therefrom. The rib or corrugation 4, above mentioned, is formed, preferably, in the rear leaf of the holder, so that the holder will present a smooth surface to view, and its purpose is to form a stop for preventing the holder from being forced too far down onto the partition. This rib facilitates the act of attachment. for it renders it unnecessary for the operator to exert care to see that the position of the holder is true, and it also avoids the necessity for the operator to see that he has left enough room between the top of the partition and the bend 5 of the holder to receive the slip-strip 6, for the rib 4 is placed at such a point in the height of the holder as to afford just suflicient space for easily receiving the slip-strip. The bend 5 at the upper edge of the holder is of sufficient diameter to afford space for the thickness of the slip-strip, and said bend forms a guide for the upper edge of said strip. The rib 4 may, if it be made deep enough, in cases where it is desirable form a guide for the lower edge of the slip-strip. The guiding feature of the rib, however, is not essential, for the strip may slide directly upon the upper edge of the partition in case the rib is made shallow, especially if the slip-strip is thinner than the inside thickness of the holder above the upper edge of the partition. It will be noted also that the prevention of the inaccurate positioning of the holder renders it certain that the slip-strip will never become jammed between the top of the holder and the top of the partition. The front of the holder has an aperture 7 therein for exposing the face of the slip-strip. This aperture is located above the rib and may be of any size or shape desired. In order to facilitate the insertion and removal of the slip-strip, an aperture 8 is formed in the rear leaf of the holder. It is not essential to do so; but it is frequently desirable to form an end near one extremity of the holderfor preventing the slip-strip from being forced too far into the holder. Such a stop may be formed in the manner illustrated in Fig. 3, in which a tongue 9 is stamped out of the metal along two sides of a triangle and the free extremity of the triangle bent inward to project part way across the holder. I have shown in Figs. 1 to 4:, inclusive, the positioning-stop 4 to be continuous from end to end of the holder; but this is not essential, as the stop might be intermittent without departing from the spirit of the invention.

In the modified form of holder shown in Fig. 5 the stop is formed by punching or otherwise forming an inwardlyprojecting tongue 4. This may properly be done after the manner offorming the end stop 9. (Shown in Fig.

Although under ordinary circumstances the holder will be constructed of spring-steel, it is to be understood that any material may be employed which has sufficient resiliency to perform like functions.

What I claim as new, and desire to secure by Letters Patent, is

l. A slip-strip holder for card-file partitions consisting of a piece of spring metal folded back upon itself with its leaves practically adjacent to each other, said holder having a positioning-stop located between its fold and its edges, and having an aperture in at least one of its leaves between said stop and said fold for exposing a slip-strip contained between its leaves.

2. A slip-stri p holder for card-file partitions consisting of two parallel leaves of metal connected by a bend tending to force the leaves toward each other, both of said leaves being practically plane surfaces, but at least one of them having a positioning rib or corrugation formed therein and said holder also having an aperture therein for exposing a slip-strip contained within its leaves, said rib being adapted to form a support for the slip-strip and prevent contact of the slip-strip with the partition.

3. Aslip-stripholderfor card-file partitions, consisting of a piece of sheet metal folded back upon itself with its leaves practically adjacent to each other, one of said leaves having an aperture near the fold of the holder for exposing a slip-strip contained between said leaves and means for supporting the lower edge of the slip-strip in the holder, and also preventing excessive sinking of the holder upon the partition.

4. As an article of manufacture, a slip-strip holder consisting of a sheet-metal clip having an aperture in one surface for exposing a slip-strip contained within the holder, said holder having a pocket formed therein at the top for slidingly receiving the slip-strip above the holder, said pocket being open at the end and running parallel with the upper edge of the partition; and means forming the bottom of the pocket for preventing the, sinking of the holder too far down on the partition.

In witness whereof I have hereunto subscribed my name in the presence of two witnesses.

ROGER A. SIMONSON. Witnesses:

HOWARD M. Cox, DWIGHT B. GHEEVER. 

